House Edge vs Bookmaker Margin
What each means, how they relate, and when to use which.Both are the built-in advantage that makes the operator money, just in different products. House edge is the casino's mathematical edge on a game; bookmaker margin is the equivalent on a sportsbook, baked into the odds. Same idea (the operator's cut), applied to casino games versus betting markets.
The house edge is the built-in mathematical advantage that ensures a casino keeps a small percentage of every amount wagered over the long run.
Use it when Use house edge for the casino's advantage on a game.
Full definition of House Edge →The bookmaker's built-in edge, seen when the implied probabilities of all outcomes in a market sum to more than 100%.
Use it when Use bookmaker margin for the sportsbook's advantage built into the price.
Full definition of Bookmaker Margin →The key distinction
- House edge applies to casino games; bookmaker margin applies to betting odds.
- House edge comes from game rules and payouts; bookmaker margin comes from shading the odds.
- Both express the operator's long-run cut as a percentage.
Common questions
What's the difference between House Edge and Bookmaker Margin?
Both are the built-in advantage that makes the operator money, just in different products. House edge is the casino's mathematical edge on a game; bookmaker margin is the equivalent on a sportsbook, baked into the odds. Same idea (the operator's cut), applied to casino games versus betting markets.
What is House Edge?
The house edge is the built-in mathematical advantage that ensures a casino keeps a small percentage of every amount wagered over the long run.
What is Bookmaker Margin?
The bookmaker's built-in edge, seen when the implied probabilities of all outcomes in a market sum to more than 100%.
More term comparisons
Understanding, not advice. This explains how two terms differ so you can read the industry clearly. Nothing here treats gambling as a way to make money; the maths favours the house. 18+.